The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2007
Filed:
Oct. 27, 2003
Shelly John Mechery, Mississippi State, MS (US);
Jagdish P. Singh, Starkville, MS (US);
Shelly John Mechery, Mississippi State, MS (US);
Jagdish P. Singh, Starkville, MS (US);
Mississippi State University, Mississippi State, MS (US);
Abstract
A sensing element, a method of making a sensing element, and a fiber optic sensor incorporating the sensing element are described. The sensor can be used for the quantitative detection of NOin a mixture of gases. The sensing element can be made by incorporating a diazotizing reagent which reacts with nitrous ions to produce a diazo compound and a coupling reagent which couples with the diazo compound to produce an azo dye into a sol and allowing the sol to form an optically transparent gel. The sensing element changes color in the presence of NOgas. The temporal response of the absorption spectrum at various NOconcentrations has also been recorded and analyzed. Sensors having different design configurations are described. The sensing element can detect NOgas at levels of parts per billion.